1408944393 has 12 divisors (see below), whose sum is σ = 2037172020. Its totient is φ = 938359296.

The previous prime is 1408944337. The next prime is 1408944403. The reversal of 1408944393 is 3934498041.

It is a happy number.

1408944393 is a `hidden beast` number, since 1 + 40 + 89 + 443 + 93 = 666.

1408944393 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 785793024 + 623151369 = 28032^2 + 24963^2 .

It is not a de Polignac number, because 1408944393 - 2⁹ = 1408943881 is a prime.

It is a super-2 number, since 2×1408944393² = 3970248605132276898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1408944893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68496 + ... + 86657.

It is an arithmetic number, because the mean of its divisors is an integer number (169764335).

Almost surely, 2^1408944393 is an apocalyptic number.

It is an amenable number.

1408944393 is a deficient number, since it is larger than the sum of its proper divisors (628227627).

1408944393 is a wasteful number, since it uses less digits than its factorization.

1408944393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156168 (or 156165 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 1408944393 is about 37535.9080481610. The cubic root of 1408944393 is about 1121.0662658713.

The spelling of 1408944393 in words is "one billion, four hundred eight million, nine hundred forty-four thousand, three hundred ninety-three".